Heater



July 24, 1928. f 1,678,059

y w. H. DARDENNE Y HEATER Filed Dec. s, 192e s Sheets-sheet x July 24, 1928.

w. H. D'ARDENNE HEATER s snets-sneet 2 Filed Dec. 8, 1926 INVENTOR: jzde a ll July 24, 1928.

W. H. DARDENNE HATER IIIH INV EN TOR.'

WTNESSIES:

Waler ATTORNEY Patented July 24, 1928.

UNITED STATES WALTER H. DARDENNE, OF PHILADELPHIA, PENNSYLVANIA.

HEATER.

Application :tiled December 8, 1926. Serial No. 153,321.

This invention relates to heaters and more unit in combination with a circulating water system vis provided to heat the atmosphere' of a room.

The object of the invention is to provide a portable heater adapted to be connected to a. source of current through a base-plug or wall socket, that will automatically operate to maintain a practically constant temperature in a given area.

A feature of the invention resides in the provision of an electric motor controlled by a heat measuring device to continually circulate a current of air in Contact with a plurality of coils, all parts of which are subjected to substantially the same temperature. F urthcr means are provided to directa supply of heated air to envelop said coils, the source thereof being under the control of the same heat measuring device.

Another feature comprises a relay adapted to control a heating element for preheating a water reservoir, and supplying a source of heat to surround a system of c oils fed by said reservoir, a portion of said coils being directly between said source and the heating element.

Other features will be apparent from the following description read in conjunction with the accompanying drawings in which Figure l shows a front view of the dev-ice partly in section. y

Figure 2 is a section through line 2-2 of. Figure 1.

Figure 3 shows the heating means and is a section through line- 3-3 of Figure 1. Figure. 4 is a representative circuit arrangement in accordance with which the device is adapted to function.

Figure 5 shows a pair of devices coupled to operate as a unit.

Considering the drawings, numeral' represents the outer wall of my heater device, 7 an upper casing telescoped over wall 6, and

8 a top superimposed over the upper por-- tion of 7. 9 is a metal screen of suitable mesh positioned between overlapping shoulder 10 of top 8 and an annular element 11 in the form of a spring positioned against the inner surface of the top peripheral extremity of 7. 12 is a dust collector, as a suitable cheese cloth or the like, positioned below screen 9 and held by ring 13, set in a groove in part 7. Top 8 may be-lifted from casing 7 to remove the screen and dust collector for cuit for the motor and heater.

cleaning. 7 may be disconnected from 6 to reach the inside of the device.

In the bottom of the' casing is a supporting base 14 in the shape of an inverted shallow cup. Reservoir 15 is fitted substantially in the center of said base and has an inlet 16 adapted to be connected to a water supply by a connection at'17. 18 represents the coils above heater 19 and 2O the main series of water coils. Ifdesired, coils 20 may be spirally formed from a single length of tubing. rI`he water from the inlet feeds the reservoir and is adapted to circulate through connection 21, the heater coils 18, feed pipe 22, coils 2O and back to the reservoir through outlet pipe 23.

Chamber 24 enclosing coils 18, is positioned directly above the heater unit and surrounded by the main series of water coils. Perforations 25, in its sides provide access to said coils for air from the chamber. Extension 26, integral with the casing of the chamber supports motor 27, adapted to drive fan 28. The blade span of fan 28 is designed to fit the interior of top 8, and when revolving, the area covered by the blade is` practically equal to that of the interior of the top.

Considering heater 19 as shown in Figure 3, the terminal plates 29 and 30 are connected to bindin posts 31' and 32 and interconnect heating element 33. 34 indicates the supports for the chamber and the circular portion represent-s the top of the reservoir.

The heat measuring device 35 may be an ordinary switch operating in accordance with the principle of the thermostat, and has a double component arm 35 adapted to make and break a circuit contact respectively upon the temperature falling below or ris` ing above certain predetermined levels. Relay 36 is provided to function withthe' device, and switch 3,7 connects a suitable service such as a house current to operate the heater and motor.

In operation, the closing of switch 37, as best illustrated on Figure 4, connects the current from transmission lines 38 to the motor and heater, connected in parallel. No circuit will be closed unless the temperature is such as to cause arm 35EL to interconnect both its contacts 39. Nhen contacts 39 are interconnected, a circuit will be closed to relay 36. Upon the energization of relay 36, it will pull up its arma-ture 4() to close the cir- When the temperature rises high enough, the arm 35a will break its contacts and hence cause the deenergization of the relay whereupon the circuit for the motor and heater will be broken.

When arm 35Z1 operates to close the relay circuit, the heater and motor will start to function. The heater will heatthe water in the reservoir and in the coils positioned. directly above it. rl`he heated water will rise to the upper coils 20 of the main series and through the body of the coils back to the reservoir. Due to this circulation, all parts of coils 20 are practically uniformly heated. The air in the chamber above the heater -will be heated and pass through apertures 25 to envelop the coils 20 surrounding the chamber. Motor 27 will cause a suction of air from the atmosphere to be heated, through screens 8 and 12. The air, as indicated by the arrows in Figure 1, will contact with the heated coils, the heated air surrounding the coils, the walls `of chamber 24, and out through screened openings 41 in the lower portion of casing,

It should be noted that the heater is positioned to serve both the reservoir and the coils immediately thereabove and the air chamber 24, in the convenient and-eliicient arrangement shown. The main battery of coils surround the chamber to obtain the heat from its walls and the heated air from its interior. The circulation of air is designed to contact with all said heated surfaces.

While the arrangement is primarily designed to operate with a water circulation' system, it may be adapted to function as a steam and hot air heating system by maintaining the water level to the top of the res ervoir only.

Water gauge 42 is provided to measure the Water level in the system and air release 43 provides an outlet for air collected in the coils. In order to adapt the device for -use in large rooms such as assembly halls, where one device would be insufficient for adequate heating, means are provided to enable two or more such devices to be coupled together if desired. As illustrated in Figures 4 and 5, a cable between two devices serves lto connect them in a parallel circuit arrangement fed by the same current source.

While I have described my invention as taking a particular form, it will be understood that the various parts may be changed without departing from the spirit thereof, and hence I do not limit myself to :the precise construction set forth, but consider that I am at liberty to make such changes' and alterations as fairly come within the s ope of the appended claims. k

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In combination air and water heater, an

outer casing, a top portion telescoped thereon having a screened opening, a tank in the base of said heater and connections therefor, an electrical unit superimposed above said tank, a coil connected with said tank above said unita chamber above said tank and enveloping' said unit and coils, a series of coils connected to said first coils and surrounding the chamber1 apertures in the walls of said chamber for air therein to reach said series of coils, automatic means for causing said unit to heat said reservoir and first coils to cause a circulation of water in connection with said series of coils, said unit heating the air in said chamber, and means for sucking in air from the atmosphere surrounding said heater through said lopening in the top portion, circulating it through the heater, and emitting it through openings adjacent the base of the casing.

2.` In a heater an outer casing, a top por tion telescoped on the casing and adapted to be removed to reach the interior of the casing, said top portion having an opening and means in association therewith for providing an outer screen and an inner dust catcher, both removably mounted, a Water reservoir positioned in the bottom of said casing means for feeding said reservoir, a heater unit above said reservoir and an air chamber above said unit, a spirally arranged coil surrounding said chamber, opening in said chamber providing egress for air therein to envelop said coils, coils in said chamber above said unit and in connection with said reservoir and first mentioned coils, a mounting above the chamber for a motor, a fan on said motor fitting the opening in said top portion, a. heat measuring device, a relay, and means operative responsive to changes in the temperature of the atmosphere surrounding the heater to cause said device to control the energization of said relay to cause the heating of said unit and the operation of said motor to circulate air from the surrounding atmosphere through the heater.

3. A portable heater having a casing with an air intake at one end and outlet means for the air on the other end, a water tank positioned in the heater, an electrical unit for heating said tank, an air chamber above the unit having an extension for supporting a motor, water coils i'n and enveloping said chamber and connected with said tank, means for permitting air within the chamber to circulate about the coils enveloping the chamber, said motor having means for sucking air vfrom the surrounding atmosphere into said air intake and emitting it through said outlet after causing it to contact with the outsides of said tank and chamber and over said coils surrounding the chamber, a relay, a thermostat switch controlling said relay, said motor and unit be- 10 chamber:

ing under the control of said relay, a source ot' current, and means for coupling the heatcr to others in a series fed by said source.

4. A heater including a casing; a water reservoir at the bottom ot` the casing; a heater unit disposed above the reservoir; a heating chamber disposed above the heater unit; a series otl coils within the heating chamber; a series ot' coils surrounding the heating a connection between the two series ot' coils; connections whereby the water may circulate from the reservoir through the two series of coils and return to the reservoir; a motor disposed above the 15 heatingr chamber: a suction fan driven by the motor; an air inletl in the upperpart of the casing and au air outlet in the lower part of the casing.

5. A heater including a casing; a water 20 reservoir atthe bottom of the casing; a heater unit disposed above the reservoir; a heating chamber disposed above the heater unit; a series of Coils within the heating chamber; a series of coils surrounding the heating 25 chamber; a connection between the two series of coils; connections whereby the water may circulate Jfrom the reservoir through the two serles of co1ls and return to the reservoir; a

motor disposed above the heating chamber; a suction t'an driven by the motor; an air inlet in the upper part of the casing, an air outlet in the lower part ot' the Casing and automatic means controlled by the temperature changes in the room for starting or stopping the motor.

6. A heaterincluding a casing; a water reservoir at the bottom of the casing; a heater unit disposed above the reservoir; a heating chamber disposed above the heater unit; a series of coils within the heating chamber; a series of coils surrounding the heating chamber; a lconnection between the two Series of coils; connections whereby the water may circulate from the reservoir through the two series ot' coils and return to the reservoir; an electric motor disposed above the heatingr chamber; a suction fan adapted to be driven by the motor; an air inlet in the upper part of the casing; an air outlet in the lower part of the casing, and automatic means controlled by the temperature changes in the room for making or breaking the motor circuit.

In testimony whereof I have signed my name to this specification.

XVALTER H. DARDENNE. 

